Note:Power Usage AlertsTo ensure a stable connection don't use this Hub with high power consumption devices (those exceed a rated current of 0.9 A among all ports) such as some large-capacity hard drives.This Hub is can t be used as a stand-alone charger. And it is not compatible with iPad or any other device has an irregular requirement of battery charging 2.4 GHz wireless devices (keyboards mice etc.) can t work for USB 3.0 ports. And try using a USB 2.0 connection to replace it.